| 摘要 |
A method reduces computational and/or bandwidth requirements of multicast routing by efficiently communicating required source state information. The method comprises receiving at a first network element, executing a modified host management protocol, a source interest list from a host over a network, the source interest list identifies at least one multicast source to be one of excluded or included from routing to the host. The modified host management protocol identifies a difference between the source interest list and a source state maintained by the first network element. The modified host management protocol provides the difference between the source interest list and the source state and not an entirety of the source interest list to a multicast routing protocol to alter the set of multicast sources to be routed to the host.
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